Only I Know the World Is Ending and Getting Killed by Rampaging Beasts Only Makes Me Stronger (Manga) Vol. 6

PUNISHING A BETRAYAL

Having been betrayed by what they'd thought was a new ally, Akira, Nao, and Ayaka team up to take down their mysterious foe. While he may have the power to control boss monsters from the other world, this trio have yet to prove what they can accomplish when they combine their skills. Meanwhile, a powerful boss monster from the past rears its ugly head...